ASTROSAT CZTI

Data Quality Report

Orbit 14536

Creation date: 2024-06-27T16:56:34.578825
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T02_049T01_9000002142_14536cztM0_level2.evt modeM0/AS1T02_049T01_9000002142_14536cztM0_level2_quad_clean.evt
Size (bytes)507,502,080115,453,440
Size484.0 MB 110.1 MB
Events in quadrant A3,518,558760,751
Events in quadrant B3,510,214763,700
Events in quadrant C3,480,589764,601
Events in quadrant D4,388,590723,355

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149853
B0150002
C0146712
D0179752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69461291.857184%
B69461692.433055%
C6946711.022171%
D69462894.160668%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7212 6949 1 1 0.01% 0.01%
B 7212 6949 32 32 0.44% 0.46%
C 7212 6949 1 1 0.01% 0.01%
D 7212 6949 259 259 3.59% 3.73%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 15 348001 2161.09 796 778 160.7
A 12 189 78841 485.86 796 778 160.7
A 0 23 11135 64.46 796 778 160.7
B 0 85 132470 864.46 799 777 152.3
B 0 189 78381 509.41 799 777 152.3
B 0 219 48378 312.46 799 777 152.3
C 3 233 440997 2460.37 777 780 178.9
C 13 61 5660 27.27 777 780 178.9
C 14 234 5057 23.9 777 780 178.9
D 12 110 832039 4504.54 765 743 184.5
D 10 199 331663 1793.16 765 743 184.5
D 15 0 143198 771.92 765 743 184.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter